Assessment 3 Flashcards
What breakers are not fitted to Type 23’s?
Busbar Linking Breaker
Why is electric propulsion preferred when involved in anti-submarine warfare?
Quieter
What type of EDP is a Shedable EDP?
Type 3
How is 440v produced on a Type 45?
Transformer
What does EMACB stand for?
Electric Motor Air Circuit Breaker
Why is 750v DC produced?
For propulsion
Where can the propulsion motors be controlled from in an emergency?
From the converter regulator cabinet
What is the output of a type 45 generator driven by a gas turbine?
4.160kV, 60Hz, 3 Phase 21MW
What equipment is not supplied by the emergency generator?
Galley equipment
What is the output of the emergency generator on a Type 23?
270Kw, 440v, 60Hz, 3 phases
How many main generators are usually fitted to a Type 23?
4
Why do we have shedable’s?
So we can re-direct power from unimportant supplies to propulsion
How do the Main Generators on a Type 23 produce 440v?
A 4-position switch
What does EDP stand for?
Electrical Distribution Panel
How many shore supply boxes are on a Type 23?
2
What is the output of a Type 23 generator?
1.3 MW, 600v, 61.2Hz, 3 Phase
What does IEP stand for?
Integrated Electrical Propulsion
How is 440v for ships services produced on a Type 23?
Motor Generators
What is used to cool the harmonic filters?
AIR is used to cool the Harmonic Filters. The air is cooled using the ships Chilled Water system
What breaker connect the forward and after switchboards together?
interconnector breaker
What does PMS stand for in a type 45?
Platform Management System
Where can the four position switch be found that re-configures a generator to supply 450v?
Rear of switchboard
What is the output of the gas turbine generators on a Type 45?
21Mw, 4160v, 60Hz 3 phases
